In the course of his losing race with the teleprompter during his Oval Office address on Dec. 17, President Donald Trump returned to a theme that obsesses him — respect. Even before his entry into ...

Spot the Difference puzzles test your attention to detail. These puzzles challenge the readers to find subtle differences ...

This study aimed to understand racial/ethnic differences in coronavirus disease 2019 (COVID-19) screening, symptom presentation, hospitalization, and mortality, using data from 31,549 adults tested ...

Learn about the negative correlation coefficient, its significance, comparison with other coefficients, and real-world examples for better statistical insight.

Robert Kelly is managing director of XTS Energy LLC, and has more than three decades of experience as a business executive. He is a professor of economics and has raised more than $4.5 billion in ...